EP0849213B2 - Turmdrehkran - Google Patents

Turmdrehkran Download PDF

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Publication number
EP0849213B2
EP0849213B2 EP97118984A EP97118984A EP0849213B2 EP 0849213 B2 EP0849213 B2 EP 0849213B2 EP 97118984 A EP97118984 A EP 97118984A EP 97118984 A EP97118984 A EP 97118984A EP 0849213 B2 EP0849213 B2 EP 0849213B2
Authority
EP
European Patent Office
Prior art keywords
load
crane
extended
curve
limit load
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97118984A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0849213B1 (de
EP0849213A1 (de
Inventor
Horst Dipl.-Ing. Zerza
Gerhard . Dipl.-Ing. Katein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liebherr Werk Biberach GmbH
Original Assignee
Liebherr Werk Biberach GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Liebherr Werk Biberach GmbH filed Critical Liebherr Werk Biberach GmbH
Publication of EP0849213A1 publication Critical patent/EP0849213A1/de
Application granted granted Critical
Publication of EP0849213B1 publication Critical patent/EP0849213B1/de
Publication of EP0849213B2 publication Critical patent/EP0849213B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/16—Applications of indicating, registering, or weighing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/40—Applications of devices for transmitting control pulses; Applications of remote control devices
    • B66C13/44—Electrical transmitters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
    • B66C2700/082—Control of the secondary movements, e.g. travelling, slewing, luffing of the jib, changing of the range
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
    • B66C2700/084—Protection measures

Definitions

  • the invention relates to a tower crane, with a monitoring the maximum load monitoring device that sets the crane out of service when the load reaches or exceeds the limit load resulting from each limit load curve.
  • a limit load curve is defined, which defines the maximum permissible projection depending on the load.
  • parameters and operating states of the crane monitoring sensors are provided, the signals of which are evaluated in an electronic monitoring and control unit that stops the crane and a interrupts further operation if a load that is too high is to be lifted or if a load is moved into the area of an impermissible projection.
  • the length of the trolley cable is measured to monitor the projection.
  • the force acting on the hoist rope is measured.
  • the deformation of the tower tip can be measured, which results from the fact that the boom tensioning cable is attached to the tower top.
  • DIN 15 018 Part 1 shall be taken into account, in which according to the Hubtiveneinannon of cranes Hublastbeiamine are specified, which represent factors with which the actual lifting load is to be multiplied in order to obtain the calculated hoisting load.
  • the hoist load factor depends on the rigidity of the crane and decreases with the elasticity of the structure and is therefore the smaller, the softer the suspension of the hoist.
  • the lifting load coefficient depends on the lifting speed at the beginning of the lifting of the payload and is smaller as the acceleration and deceleration when lifting the load and changes in the lifting movements are smaller.
  • the lifting speed is greater at low load, so that the Hublastbeiwert is smaller at a lower load and at a higher load and correspondingly reduced lifting speed.
  • the object of the invention is to provide a crane of the type specified, whose permissible load is increased without changing the existing construction.
  • the crane according to the invention can be operated in an admissible manner in an extended limit load range, in which the speed of the load movement is monitored and kept within limits, which take into account the associated Hublastbeiwert for each speed.
  • the invention allows the movement of higher peak loads, as it is possible under consideration of the usual limit load curve.
  • the invention is based on that the inherent load capacity of the crane is fully utilized and the permissible load-determining parameters are precisely and in a manner monitored by special control and monitoring devices that even with improper operation, the extended limit load curves can not be exceeded ,
  • a switch is provided by the operation of the crane operation can be switched to the extended limit load curve.
  • a signal can be given shortly before reaching the limit load curve.
  • This switch can be automatically activated manually or by a special electrical circuit if the LM 1 range in the direction of the LM 2 range is exceeded and vice versa.
  • Tower cranes are often automatically switchable between two-strand and four-strand operation. According to a preferred embodiment, it is therefore provided that for the two-strand and the four-strand operation special extended load limits are defined, which are set for the respective crane type, so that insofar simplification of the control results as the marginal load ranges not particularly must be calculated for each speed.
  • the extended limit load range for both two-strand operation and four-strand operation may be limited by constant load curves.
  • the constant load limiting the extended limit load range for the two-strand operation corresponds to the highest possible lifting load on the jib tip for a predetermined reduced speed for load lifting or lowering movement.
  • the extended limit load range for the constant load limiting the four-strand operation can correspond to twice the lifting load which is possible in two-line operation on the jib tip.
  • an additionally even extended limit load range is created by providing an additional movable counterweight on the counterjib.
  • This counterweight can be moved in each case for the corresponding balancing of the boom and the load torque and is particularly useful in luffing boom.
  • Fig. 1 is a diagram can be seen in which on the ordinate the load (t) and on the abscissa the permissible projection of the load (m) are plotted.
  • the usual limit load curve consists of the constant range 10 and the variable load range, which is represented by the curved curve 11.
  • an extended limit load range is defined, which is limited by the extended limit load curve 12. This extended limit load range results from the fact that in this, the payload can only be raised and lowered at a speed that is reduced compared to the load limit curve 11, taking into account the Hublastbeiamine.
  • the electronic calculator the crane control system the maximum permissible speeds with which the payload may be raised and lowered in order to remain within the permissible load range, taking into account the hoist load coefficients.
  • the maximum possible speed of the hoist is limited to a value at which the maximum permissible speeds can not be exceeded.
  • the trolley is also moved at a reduced speed in order to avoid large accelerations.
  • the slewing gear In the extended limit load range, the slewing gear for the tower or for the boom supporting the superstructure is reduced, so that a rotation of the boom is only possible with a correspondingly reduced rotational speed.
  • a Vorwarnkurve 13 is provided at the start of a signal emits an advance warning that the crane operator indicates that he the limit load range anacre and must operate a switch if he wants to run over this.
  • the extended limit load range for two-strand operation is defined by points 1.1, 2 and 1. If the crane operator has moved the increased payload permitted in the extended limit load range from point 2 to point 1.1, he reaches the normal limit load curve in this area and thus enters the area in which he is not subject to any restrictions when lifting and moving the load.
  • the extended limit load range between the points 1, 1.3, 2.2 and 2. applies. It should be noted that after the (automatic) switching from two-line Operation on four-strand operation with the same cable the double load can be lifted. However, since the stroke speed is reduced due to the half stroke speed at the same winding speed of the rope, the extended limit load range limited by the constant load curve section 1.3, 2.2 is increased. The extension of the limit load range for the four-strand operation is made because halved by the Umschervorgang the lifting speed, so that the to be considered Hublastbeiwert reduced accordingly and a crane operation in an extended limit load range is possible.
  • Fig. 4 is an additionally extended limit load range between the curves 11 and 14 defined, which is achieved in that an additional counterweight 15 is moved on the counter-jib 16 from its near-the-tower position 1 in its dashed shown off-tower position 2.
  • the method is carried out, in particular with a pivotable boom, for additional load torque compensation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
EP97118984A 1996-12-20 1997-10-30 Turmdrehkran Expired - Lifetime EP0849213B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19653579.4A DE19653579B4 (de) 1996-12-20 1996-12-20 Turmdrehkran
DE19653579 1996-12-20

Publications (3)

Publication Number Publication Date
EP0849213A1 EP0849213A1 (de) 1998-06-24
EP0849213B1 EP0849213B1 (de) 2001-01-03
EP0849213B2 true EP0849213B2 (de) 2010-06-23

Family

ID=7815717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97118984A Expired - Lifetime EP0849213B2 (de) 1996-12-20 1997-10-30 Turmdrehkran

Country Status (5)

Country Link
EP (1) EP0849213B2 (es)
KR (1) KR19980063702A (es)
AT (1) ATE198460T1 (es)
DE (2) DE19653579B4 (es)
ES (1) ES2155648T5 (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19857298C2 (de) * 1998-12-14 2001-03-08 Klaas Theodor Gmbh & Co Dachdeckerkran mit Kippsensor
US6269635B1 (en) 1999-01-20 2001-08-07 Manitowoc Crane Group, Inc. Control and hydraulic system for a liftcrane
DE10023418A1 (de) * 2000-05-12 2001-11-15 Liebherr Werk Nenzing Verfahren zur Überlastsicherung eines mobilen Kranes
DE10115312A1 (de) * 2001-03-28 2002-10-02 Man Wolffkran Verfahren zur Steuerung von Kranbewegungen sowie Kran
DE102005035729A1 (de) * 2005-07-29 2007-02-01 Liebherr-Werk Ehingen Gmbh Verfahren zum Betreiben eines Krans
DE102006043492A1 (de) * 2006-09-12 2008-03-27 Stahl Cranesystems Gmbh Hebezeug mit erweitertem Lastbereich
DE102011102025A1 (de) * 2011-05-19 2012-11-22 Liebherr-Werk Nenzing Gmbh Kransteuerung
DE102013005936A1 (de) 2013-04-05 2014-10-09 Liebherr-Werk Biberach Gmbh Kran
DE202013003375U1 (de) 2013-04-11 2013-05-22 Hermann Paus Maschinenfabrik Gmbh Mobiler Anhängerkran
DE202013003376U1 (de) 2013-04-11 2013-05-22 Hermann Paus Maschinenfabrik Gmbh Mobiler Anhängerkran
FR3037681B1 (fr) * 2015-06-18 2017-11-24 Manitowoc Crane Group France Procede de definition d’une courbe de charges optimisee pour grue, procede et dispositif de controle pour controler la charge suspendue a une grue a partir de la courbe de charges optimisee
FR3071240B1 (fr) 2017-09-21 2019-09-06 Manitowoc Crane Group France Optimisation dynamique d’une courbe de charge de grue
CN108383008A (zh) * 2018-03-07 2018-08-10 徐州建机工程机械有限公司 塔机超起控制方法及系统
KR101994770B1 (ko) 2018-04-03 2019-07-01 최덕진 수중펌프용 플로트 스위치 조립체
CN110240066A (zh) * 2019-06-26 2019-09-17 北京起重运输机械设计研究院有限公司 一种起重机械在线监控系统
DE102022113867A1 (de) 2022-06-01 2023-12-07 Liebherr-Werk Nenzing Gmbh System zum Überprüfen einer Funktionsfähigkeit einer Komponente einer mobilen Arbeitsmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041657A5 (es) † 1969-05-29 1971-01-29 Richier Sa
GB1403046A (en) † 1972-09-08 1975-08-13 Weimar Kombinat Veb Load factor safety mechanism

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2033469B2 (de) * 1970-07-07 1979-01-18 Carl Metz Gmbh, 7500 Karlsruhe Kippmomentabhängige Leitersteuerung
DE3103728A1 (de) * 1981-02-04 1982-09-02 Fried. Krupp Gmbh, 4300 Essen "einrichtung zur verbesserung des betriebsverhaltens mobiler drehkrane"
FI862627A0 (fi) * 1986-06-19 1986-06-19 Fiskars Ab Oy System foer reglerande av en krans hastighet.
DE3835522A1 (de) * 1988-10-19 1990-05-03 Man Ghh Krantechnik Kransteuerung
RU2093452C1 (ru) * 1988-12-27 1997-10-20 Като Воркс Ко., Лтд. Крановое предохранительное устройство
DE4223695C2 (de) * 1992-07-21 1994-12-08 Weber Anlagenbau Gmbh & Co Kg Steuerung für das Verschwenken eines in seiner effektiven Länge veränderlichen Auslegers
DE4417608A1 (de) * 1994-02-09 1995-08-10 Liebherr Werk Biberach Gmbh Verfahren und Vorrichtung zur Lastmomentbegrenzung eines Turmdrehkrans

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041657A5 (es) † 1969-05-29 1971-01-29 Richier Sa
GB1403046A (en) † 1972-09-08 1975-08-13 Weimar Kombinat Veb Load factor safety mechanism

Also Published As

Publication number Publication date
DE19653579B4 (de) 2017-03-09
ATE198460T1 (de) 2001-01-15
DE59702853D1 (de) 2001-02-08
DE19653579A1 (de) 1998-06-25
ES2155648T3 (es) 2001-05-16
KR19980063702A (ko) 1998-10-07
EP0849213B1 (de) 2001-01-03
EP0849213A1 (de) 1998-06-24
ES2155648T5 (es) 2010-11-29

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